Answer Posted / aslam baig
Primary key contains the charechteristics ( unique , not
null ), which means the number should not repeat, and
should null, the employees in the company can have same
name. if you assign unique number we can easily identity.
which employee absent, which employee got salary.... etc.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is an index associated with a constraint?
How a tablespace is related to data files?
What are the oracle built-in data types?
What is a nvl function?
What happens in oracle commit?
What are oracle functions?
What would you do with an in-doubt distributed transaction?
What are a cluster and non-cluster index?
What is define in oracle?
Does oracle charge for java?
What is user managed backup in Oracle?
 What are the oracle DML commands possible through an update strategy?
How many anonymous blocks can be defined?
What are the attributes that are found in a cursor?
What is an Oracle Instance?